EP2668236A1 - Peintures de base pour vernis multicouches surcuits - Google Patents

Peintures de base pour vernis multicouches surcuits

Info

Publication number
EP2668236A1
EP2668236A1 EP12700575.9A EP12700575A EP2668236A1 EP 2668236 A1 EP2668236 A1 EP 2668236A1 EP 12700575 A EP12700575 A EP 12700575A EP 2668236 A1 EP2668236 A1 EP 2668236A1
Authority
EP
European Patent Office
Prior art keywords
basecoat
clearcoat
coating
additional
layer coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12700575.9A
Other languages
German (de)
English (en)
Inventor
Bernhard Steinmetz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Coatings GmbH
Original Assignee
BASF Coatings GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF Coatings GmbH filed Critical BASF Coatings GmbH
Priority to EP12700575.9A priority Critical patent/EP2668236A1/fr
Publication of EP2668236A1 publication Critical patent/EP2668236A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/41—Organic pigments; Organic dyes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/53—Base coat plus clear coat type
    • B05D7/534—Base coat plus clear coat type the first layer being let to dry at least partially before applying the second layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/41—Compounds containing sulfur bound to oxygen
    • C08K5/42—Sulfonic acids; Derivatives thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing

Definitions

  • the present invention relates to thermally curable basecoats, their preparation and use, as well as to the basecoats contained multilayer and double coatings, processes for their preparation and their use. Furthermore, the invention relates to substrates which are coated with the basecoats or the multilayer and double coatings.
  • Multicoat paint systems used in the field of automotive OEM finishing today generally consist of an electrophoretically applied primer which protects against corrosion and stone chips and a filler layer which subsequently protects against stone chips and smooths the surface.
  • the filler layer is usually applied to the already baked primer and cured. But it is also possible to cure the primer and filler layer together.
  • a single-coat finish or a decorative two-coat finish is then applied from a color and / or effect basecoat applied depending on the particular shade in one or more spray passes and a protective clearcoat applied thereto wet-on-wet. Subsequently, the monolayer coating or the basecoat film (s) and the clearcoat film are cured together.
  • Wet-on-wet coating is a term for two or more coatings without intermediate drying (Rompp Lacke and printing inks, Georg Thieme Verlag Stuttgart / New York 1998, ISBN 3-13-776001 -1, keyword “wet-in Wet painting ").
  • Wet-on-wet coatings and corresponding processes are known, for example, from German Patent Application DE 199 48 004 A1 (page 17, line 37, to page 19, line 22), or German patent DE 100 43 405 C1 (column 3, paragraph [0018] and column 8, paragraph [0052], to column 9, paragraph [0057], in connection with column 6, paragraph [0039], to column 8, paragraph [0050]). They will work for both OEM (OEM) as well as for the refinishing of automobile bodies used.
  • OEM OEM
  • Overburning is a term for the burning-in of a coating material with higher energy input (burn-in time and / or temperature are exceeded) than is necessary for complete crosslinking (Rompp Lexikon Lacke und Druckmaschine, page 585, keyword “overburning”) As flow disturbances or drying problems occur, the coating is generally released (see Rompp Lexikon Lacke and printing inks, ISBN 3-13-776001 -1, keyword “Lackierinen”).
  • the overburned multicoat paint system comprising base coat and clearcoat is optionally sanded off in the areas in which the painting defects have occurred, and the body is again introduced into the painting process.
  • basecoat and clearcoat are again applied, dried and cured (the resulting layers are referred to below as “additional basecoat” or “additional clearcoat”).
  • the paint system of overburned multi-layer coating and additional basecoat and clearcoat is called "double-coating".
  • the present invention therefore an object of the invention to eliminate the disadvantages of the prior art described above. It should thermally curable basecoats are provided which have significantly improved adhesion properties as basecoat materials of the prior art as an additional basecoat film in a double coating, in particular on overburned multicoat paint systems. In addition, the basecoats should be suitable for use both as an additional basecoat and as a basecoat for the overcoated multicoat paint system. This would have the advantage that only a single base coat would have to be made available for the painting process even in the case of overburning.
  • thermal cure means the heat-initiated crosslinking of a paint layer.
  • Basecoat is a term used to refer to a conventional intermediate color coating composition in automotive refinish
  • the resulting basecoat is part of a multicoat paint system which further comprises a topcoat of a clearcoat that protects the basecoat from weathering, mechanical and chemical attack (Rompp's coatings and inks , Georg Thieme Verlag Stuttgart / New York 1998, ISBN 3-13-776001 -1, keyword “base coat”).
  • a multi-layer coating several basecoats can also be arranged one above the other.
  • basecoats have been found which do not have the disadvantages of the prior art.
  • Basecoats were found which have excellent adhesion in a double-coating as additional basecoats on overcoated multicoat paint systems.
  • the basecoat could be used in the overburned multi-layer coating.
  • thermally curable basecoats were found which a. at least one polyurethane resin as binder,
  • R 1 and R 2 are hydrogen atoms or linear or branched alkyl radicals having 4 to 24 carbon atoms, where R 1 and R 2 may be identical or different,
  • a and B are independently H, an alkali metal or NH 4 and
  • x 1 or 2
  • basecoats are also referred to below as basecoats according to the invention.
  • the parts by weight of all constituents of the basecoat according to the invention add up to 100% by weight.
  • European Patent Application EP 0603659A1 and US Pat. No. 4,971841 disclose basecoats and clearcoats containing sulfonic acid derivatives as curing catalysts. Suitable examples are p-toulolsulfonic acid, dinonylnaphthalenedisulfonic acid or dodecylbenzenesulfonic acid. However, these paints have insufficient adhesion to overblown clearcoats.
  • Binders in the context of the present invention are understood as meaning self-crosslinking and crosslinking binders.
  • a separate crosslinking agent is used for externally crosslinking binders.
  • Self-crosslinking binders do not require separate crosslinking agents.
  • the crosslinking agent contains reactive functional groups which are complementary to the reactive functional groups present in the binders. If the complementary reactive functional groups or autoreactive functional groups, ie groups which "react with themselves" already exist in the binder molecules, self-crosslinking binders are present. Examples of suitable complementary reactive functional groups and autoreactive functional groups are known from German patent application DE 199 30 665 A1, page 7, line 28, to page 9, lines 24.
  • the basecoat material according to the invention contains at least one saturated or unsaturated polyurethane resin as binder.
  • Suitable saturated or unsaturated polyurethane resins are described, for example, in
  • German Patent Application DE 199 1 1 498 A1 column 1, lines 29 to 49, and column 4, line 23, to column 1 1, line 5,
  • German Patent Application DE 199 48 004 A1 page 4, line 19, to page 13, line 48,
  • the polyurethane resins preferably contain either for stabilization
  • nonionic hydrophilic groups are nonionic hydrophilic groups.
  • Carboxyl or carboxylate groups and nucleophilic groups such as amine or hydroxyl groups are preferred.
  • Suitable crosslinking agents are, for example, polyisocyanates which have blocked or unblocked NCO groups, and amino resins such as melamine-formaldehyde resins.
  • the polyurethane resins are linear or contain branches. They can also be present as graft polymers. In this case, they are preferably grafted with acrylate groups. The corresponding acrylate groups are preferably introduced into the polymer after preparation of a polyurethane primary dispersion.
  • Such graft polymers are well known to the person skilled in the art and are described, for example, in DE 199 48 004 A1.
  • the polyurethane resin content is preferably 50 to 100 wt .-%, preferably 50 to 90 wt .-% and particularly preferably 50, preferably 80 wt .-%, based on the film-forming solids of the basecoat.
  • film-forming solid is understood to mean the nonvolatile weight fraction of the coating material without pigments, fillers and the compound of the formula (I). This was determined according to DIN EN ISO 3251. The measurement duration was 60 min at 125 ° C.
  • the polyurethane resin content is preferably between 10 and 80% by weight, preferably between 15 and 75% by weight and particularly preferably between 20 and 70% by weight, based in each case on the film-forming solid of the basecoat.
  • externally crosslinking binders are used.
  • the basecoat may contain polyacrylates and / or polyesters as further foreign or self-crosslinking binders. These contain at least one reactive functional group which is described in DE 199 30 665 A1 (see above). Polyurethane resins containing acrylate groups are also referred to as polyurethane acrylates. They are preferred binders of the basecoat according to the invention. disulfonates
  • the compound of formula (I) is present in a proportion of 0.04 to 2.30 wt .-%, preferably from 0.04 to 1, 60 wt .-%, based on the total weight of the basecoat according to the invention, contained.
  • the proportion is particularly preferably 0.04 to 1, 20 wt .-%.
  • the object underlying the invention is not solved. If the content is more than 2.3 wt .-%, may have disadvantages such. As a deterioration in the properties of the coatings after condensation water stress, be accepted.
  • R 1 and R 2 are alkyl radicals.
  • exactly one radical R 1 or R 2 , particularly preferably R 1 is an alkyl radical.
  • R 1 is particularly preferably an alkyl radical and R 2 is H.
  • Preferred alkyl radicals are linear or branched having 6 to 18 carbon atoms, more preferably 6, 12 or 16 carbon atoms, most preferably 12 carbon atoms.
  • the alkyl radicals are preferably branched.
  • a and B are hydrogen atoms, alkali metals or NH 4 .
  • Particularly preferred alkali metals are Na and K.
  • Particularly preferred disulfonates are available, for example, in the form of an aqueous solution under the trade name Dowfax 2A1 from Dow Chemical Company. pigments
  • the basecoats according to the invention contain at least one pigment.
  • the basecoats preferably contain from 0.5 to 20% by weight, based on the total weight of the basecoat, of at least one pigment. Preference is given to basecoats which contain from 2 to 10% by weight of pigments.
  • Pigments are powdery or platelet-shaped colorants which, in contrast to dyes, are insoluble in the surrounding medium (cf Rompp Lacke and Druckmaschine, Georg Thieme Verlag Stuttgart / New York 1998, ISBN 3-13-776001-1, keyword "pigments").
  • the pigment is preferably selected from the group consisting of organic and inorganic, coloring, effect-imparting, coloring and effect-imparting, magnetically shielding, electrically conductive, corrosion-inhibiting, fluorescent and phosphorescent pigments.
  • Preferred pigments are pigments and / or effect pigments.
  • the basecoats of the invention may contain organic solvents. Preferably, a maximum of 15 wt .-% organic solvents, based on the total weight of the basecoat, included. This is a specification value of the automotive industry for the volatile organic content that should not be exceeded.
  • the basecoats contain 30 to 70 wt .-% water, based on the total weight of the basecoats. Preferably, 35 to 65 wt .-% water are included. Corresponding basecoats are often referred to in the art as water-based paints or waterborne paints. catalysts
  • the basecoats of the invention may contain catalysts for the crosslinking reaction of the reactive functional groups of the binders and, if present, crosslinking agents which are different from the compounds of the formula (I).
  • the basecoats may contain from 0.05 to 2% by weight, based on the total weight of the basecoat, of at least one catalyst. Suitable catalysts are, for example, sulfonic or phosphonic acid derivatives.
  • the basecoats of the invention may contain auxiliaries and additives which are different from the abovementioned substances.
  • the basecoats preferably contain from 2 to 10% by weight, based on the total weight of the basecoat, of at least one auxiliary or additive.
  • Suitable auxiliaries or additives are the known auxiliaries and additives commonly used in the paint industry.
  • auxiliaries and additives are, for example, antioxidants, deaerating agents, wetting agents, dispersants, emulsifiers, rheology aids such as leveling agents, thickeners, film-forming aids, anti-sagging agents and thixotropic agents, waxes and waxy compounds, slip additives, reactive diluents, fillers, dyes, nanoparticles, flow aids, siccatives , Biocides, surface-wetting additives, surface-improving additives, sag-control agents (SCAs), matting agents, free-radical scavengers, light stabilizers, adhesion promoters, corrosion inhibitors, radical polymerization initiators, flame retardants or polymerization inhibitors, as described in the book "Lackadditive "Suitable adjuncts of the abovementioned type are described, for example, in German Patent Application DE 199 48 004 A1, page 14, line 4, to page 5, by Johan Bielemann, Wiley-VCH, Wein
  • the solids content of the basecoat according to the invention may vary depending on the requirements of the case. In the first place, the solids content depends on the viscosity required for application, in particular spray application, so that it can be adjusted by the person skilled in the art on the basis of his general knowledge, if appropriate with the aid of less orienting tests.
  • the solids content of the basecoats according to the invention is preferably from 5 to 70% by weight, more preferably from 10 to 65% by weight and in particular from 12 to 60% by weight, based in each case on the total weight of the basecoat.
  • solids content is to be understood as meaning the proportion by weight which remains under evaporation as a residue under defined conditions. This was determined according to DIN EN ISO 3251. The measurement duration was 60 min at 125 ° C.
  • the basecoats are thermally curable. In addition, they can be cured with actinic radiation.
  • the basecoats may also contain binders that can be physically cured.
  • the term "physical curing” means the formation of a film by the release of solvents (in particular organic solvents and water) from polymer solutions or polymer dispersions.
  • actinic radiation is electromagnetic radiation such as near infrared (NIR), visible light, UV radiation, X-radiation or ⁇ radiation, in particular UV radiation, and corpuscular radiation such as electron radiation, beta radiation, alpha radiation, proton radiation or neutron radiation
  • NIR near infrared
  • UV radiation visible light
  • X-radiation or ⁇ radiation in particular UV radiation
  • corpuscular radiation such as electron radiation, beta radiation, alpha radiation, proton radiation or neutron radiation
  • the basecoats of the invention can be used as one-component (1K), two-component (2K) or multi-component systems.
  • binders and crosslinkers are juxtaposed, i. in a component, before. The prerequisite for this is that the two constituents crosslink together only at higher temperatures and / or when exposed to actinic radiation.
  • Suitable crosslinking agents are for example blocked polyisocyanates.
  • binders and crosslinking agents are present separately from one another in at least two components which are combined only shortly before or immediately before application, ie within the processing time. This form is selected when the binder and crosslinking agent react with each other even at room temperature (20 to 25 ° C). Suitable examples are unblocked polyisocyanates as crosslinking agents.
  • the basecoats of the invention are preferably prepared by the process according to the invention for the preparation of the basecoat material according to the invention.
  • the basecoat can be prepared by mixing and optionally homogenizing the above-mentioned ingredients. Preferably, it is mixed with one another in the above-mentioned mixing ratios and optionally homogenized. In two- or multi-component systems, binders and crosslinkers become within the processing time combined to the application.
  • the basecoat of the invention can be prepared by using the mixing methods and mixing units customary and known for the production of basecoats.
  • the multicoat system comprises at least one basecoat of a basecoat material according to the invention and at least one clearcoat.
  • the double coating comprises at least one multi-layer coating which consists of at least one basecoat of the basecoat of the invention and at least one clearcoat. Furthermore, the double coating comprises at least one additional basecoat of the basecoat of the invention and at least one additional clearcoat, which are disposed over the overburned multi-layer coating. Preferably, the multi-layer coating is overburned.
  • Another object of the invention is a multi-layer coating, as defined above. This has at least one basecoat of the basecoat of the invention and at least one clearcoat.
  • Another object of the invention is a double coating, as defined above.
  • the basecoat of the invention is used both as a basecoat for the production of the above-mentioned multi-layer coating and for the production of the additional basecoat.
  • the multi-layer coating is overburned. In the case of overburning, it is thus not necessary to provide a basecoat of a different composition. Rather, the same basecoat according to the invention can be used both as a basecoat of the multicoat paint system and as an additional basecoat.
  • the clearcoats of the multicoat system and the additional clearcoat can be commercially available clearcoats. Preferably, the same clearcoats are used for the clearcoat of the multicoat system and the additional clearcoat.
  • the coating of the basecoat according to the invention is preferably applied in a dry film thickness of 4 to 35 ⁇ m.
  • the basecoat materials according to the invention and the further paints of the multi-coat or double-coating can be applied by conventional methods such as spraying (for example airless, airmix, compressed air, hot spraying or induction mixing), rolling, rolling, brushing or via a cartridge.
  • spraying for example airless, airmix, compressed air, hot spraying or induction mixing
  • rolling rolling
  • brushing or via a cartridge.
  • the paints are sprayed.
  • Another object of the present invention is a process for the preparation of the multi-layer coating according to the invention.
  • at least one inventive basecoat and at least one clearcoat are applied successively.
  • the clearcoat can be applied wet-on-wet and cured.
  • Another object of the present invention is a process for the preparation of the double coating according to the invention.
  • at least one basecoat of the invention as an additional basecoat and at least one clearcoat as an additional clearcoat are applied successively to the multi-coat coating according to the invention.
  • the paint of the additional clearcoat can be applied wet-on-wet and cured.
  • the multicoat paint systems or double coatings may have been applied to any desired substrates.
  • the layer of the basecoat of the invention acts as a basecoat of the multi-layer coating and as an additional basecoat of a double-coating.
  • the substrates can be made from the be constructed of different materials and combinations of materials such as metallic and non-metallic materials.
  • metals and plastics preferably automobile bodies or parts thereof, are painted.
  • Another object of the invention is the use of the basecoat according to the invention for coating substrates, preferably the substrates mentioned above.
  • These also include coatings in the form of the multicoat system according to the invention and the double-coating system according to the invention.
  • the multi-layer coating is overburned.
  • Another object of the invention are the above-mentioned substrates which are coated with the basecoat according to the invention or the multi-layer coating according to the invention or the double coating according to the invention.
  • Pluriol P 900 propylene oxide, available from BASF 0.7
  • Polyester prepared according to Example D of DE-A-4009858. 5 2. Preparation of the water-based paint of the invention and the comparative paints as additional basecoats in a double-coating
  • the aqueous basecoat 1 is mixed with 0.3 parts by weight of the solid of a further constituent, based on the total weight of the waterborne basecoat 1.
  • the paints 1-7 were tested for their adhesion properties. For this they were painted in the construction "overburned double coating”. Double finish
  • the filler was intermediately dried over a period of 10 min at 80 ° C and then baked at 190 ° C over a period of 30 min.
  • the respective basecoat according to Table 2 was pneumatically applied to this plate. After the basecoat had been flashed off at room temperature for 1 minute, the basecoat was dried for 10 minutes at 70 ° C. in a circulating air oven. Subsequently, BASF commercially available 2-component clearcoat FF98-0018 was also applied pneumatically and after 20 minutes of flash-off at room temperature, the two layers baked at a temperature of 160 ° C over a period of 30 min. This resulted in a burned multi-layer coating.
  • the stone impact test was carried out according to DIN 55966-1.
  • the assessment of the results of the stone impact test was carried out according to DIN EN ISO 20567-1.
  • the steam jet test was carried out in accordance with DIN 55662.
  • the evaluation of the results of the steam jet test was carried out according to DIN EN ISO 55662.
  • the cross-cut test was carried out in accordance with DIN 2409.
  • the evaluation of the results of the cross hatch test was carried out according to DIN EN ISO 2409. Table 3 shows the results and the specification of the adhesion tests of the respective coatings.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne une peinture de base thermodurcissable, contenant au moins une résine polyuréthane en tant que liant, au moins un pigment, de 30 à 70 % en poids d'eau, rapporté au poids total de la peinture de base, et de 0,04 à 2,3 % en poids, rapporté au poids total de la peinture de base, d'au moins un composé acide disulfonique de formule (I). La peinture de base est appliquée sur un vernis multicouche surcuit et possède d'excellentes propriétés d'adhérence.
EP12700575.9A 2011-01-25 2012-01-24 Peintures de base pour vernis multicouches surcuits Withdrawn EP2668236A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12700575.9A EP2668236A1 (fr) 2011-01-25 2012-01-24 Peintures de base pour vernis multicouches surcuits

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161435842P 2011-01-25 2011-01-25
EP11152122 2011-01-25
PCT/EP2012/051032 WO2012101115A1 (fr) 2011-01-25 2012-01-24 Peintures de base pour vernis multicouches surcuits
EP12700575.9A EP2668236A1 (fr) 2011-01-25 2012-01-24 Peintures de base pour vernis multicouches surcuits

Publications (1)

Publication Number Publication Date
EP2668236A1 true EP2668236A1 (fr) 2013-12-04

Family

ID=45507703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12700575.9A Withdrawn EP2668236A1 (fr) 2011-01-25 2012-01-24 Peintures de base pour vernis multicouches surcuits

Country Status (5)

Country Link
US (1) US20140050927A1 (fr)
EP (1) EP2668236A1 (fr)
JP (1) JP2014508200A (fr)
CN (1) CN103339200A (fr)
WO (1) WO2012101115A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104592875B (zh) * 2014-12-30 2018-03-06 英德市雅家涂料有限公司 一种pu防开裂白底漆及其制作工艺
DE102017204522A1 (de) * 2017-03-17 2018-09-20 Voestalpine Stahl Gmbh Verfahren zur Herstellung von lackbeschichteten Elektroblechbändern und lackbeschichtetes Elektroblechband

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CN103339200A (zh) 2013-10-02
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JP2014508200A (ja) 2014-04-03

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